Error while inserting woocommerce theme

### Using cherry framework with child theme, in functions.php trying to override woocommerce template.

add_filter( 'template_include', 'wc_template_check' );
function wc_template_check( $template ) {
    if ( is_shop() ){
        return get_stylesheet_directory() . '/woocommerce/content-product_cat.php';
    }
}

### as a result I get this error.

/*  Catchable fatal error: Object of class WP_Error could not be converted to string in F:\xampp\htdocs\estlita.lt\wp-content\themes\estlita\woocommerce\content-product_cat.php on line 38
*   Call Stack #TimeMemoryFunctionLocation 10.0004134752{main}( )...\index.php:0 20.0007136696
*   require( 'F:\xampp\htdocs\estlita.lt\wp-blog-header.php' )...\index.php:17 31.421541508992
*   require_once( 'F:\xampp\htdocs\estlita.lt\wp-includes\template-loader.php' )...\wp-blog-header.php:16 41.458441756752
*   include( 'F:\xampp\htdocs\estlita.lt\wp-content\themes\estlita\woocommerce\content-product_cat.php' )...\template-loader.php:74
*/

### On line 38 there is such code:
### <a href="<?php echo get_term_link( $category->slug, 'product_cat' ); ?>">

### On Cherry Framework there is Custom functions files /includes/custom-functions.php

### Maybe this somehow messes up get_term_link.

    // Product title length
    add_filter( 'the_title', 'tm_product_title_length', 10, 2 );
    function tm_product_title_length($title) {
        if (is_admin())
            return $title;
        global $post, $woocommerce_loop;
        $post_type = get_post_type( $post );
        if ($woocommerce_loop) {
            if ( 'product' == $post_type ) {
                $length_limit = intval( of_get_option('cat_title_length_limit') );
                if ( "" != $length_limit ) {
                    $words = explode(' ', $title, ($length_limit + 1));
                    if( count($words) > $length_limit ) {
                        array_pop($words);
                        $title = implode(' ', $words) . '... ';
                    }
                }
            }
        }
        return $title;
    }